| Mercerville to Oswego (Illinois) | 718.19 mi (1,155.82 km) |
| Mercerville to Oswego (New York) | 240.88 mi (387.66 km) |
| Mercerville to Otsego (Minnesota) | 1,018.36 mi (1,638.90 km) |
| Mercerville to Ottawa (Illinois) | 742.52 mi (1,194.97 km) |
| Mercerville to Ottawa (Kansas) | 1,101.38 mi (1,772.50 km) |
| Mercerville to Ottumwa (Iowa) | 929.55 mi (1,495.97 km) |
| Mercerville to Overland (Missouri) | 841.83 mi (1,354.80 km) |
| Mercerville to Overland Park (Kansas) | 1,066.88 mi (1,716.98 km) |
| Mercerville to Overlea (Maryland) | 114.11 mi (183.64 km) |
| Mercerville to Oviedo (Florida) | 880.76 mi (1,417.45 km) |
| Mercerville to Owasso (Oklahoma) | 1,175.76 mi (1,892.20 km) |
| Mercerville to Owatonna (Minnesota) | 983.74 mi (1,583.17 km) |
| Mercerville to Owensboro (Kentucky) | 688.20 mi (1,107.55 km) |
| Mercerville to Owings Mills (Maryland) | 125.13 mi (201.38 km) |
| Mercerville to Owosso (Michigan) | 525.33 mi (845.43 km) |
